Practical HDR and Wide Color Techniques in Gran Turismo SPORT

Summary: A consistent workflow is important to fully demonstrate the attractiveness of high-quality CG content, especially when such content uses high dynamic range (HDR) and wide color gamut (WCG) techniques. This course explains a practical workflow useful for both game developers and creators involved in HDR / Wide color content. Even though CG quality has significantly improved over the past years, final output quality is restricted by limitations of luminance and color gamut of conventional output devices such as televisions. Recently HDR and Wide color technology has expanded these limitations but it is problematic to output high quality HDR images on each device, because consistent interpretations of both hardware behavior and software specification is difficult. Therefore, it is necessary to carefully establish reliable standards for stable outputs on various devices. For that purpose, we need a consistent theory-based approach for each aspect of the workflow (asset collecting and editing, interchangeable formats, encoding, preview environment, verification) and rendering pipeline (lighting, tone mapping, etc). Using reliable standards enables us to gain robust outputs with high color reproducibility and high dynamic range accuracy. This course shares a wide range of knowledge from the basics of color science to the concrete solution used in the production of Gran Turismo SPORT, a photo realistic racing game with high quality HDR images. Participants can learn about real experience in developing HDR and WCG content.

Author(s)/Speaker(s):
Moderator: Hajime Uchimura, Polyphony Digital Inc., Japan
Lecturer(s): Hajime Uchimura, Polyphony Digital Inc., Japan
Kentaro Suzuki, Polyphony Digital Inc., Japan

Author(s)/Speaker(s) Bio:
Hajime Uchimura is a graphics programmer at Polyphony Digital Inc. He started computer graphics with MSX at age of 6. He joined Polyphony Digital Inc. after high-precision calculation research at master’s course. His main topics are image processing and color science. A girl and a boy 's father.

Hajime Uchimura is a graphics programmer at Polyphony Digital Inc. He started computer graphics with MSX at age of 6. He joined Polyphony Digital Inc. after high-precision calculation research at master’s course. His main topics are image processing and color science. A girl and a boy 's father.

Kentaro Suzuki is a graphics programmer at Polyphony Digital Inc. His computer graphics life began with 00’s demoscene culture. After majoring in computer graphics at university, he joined Polyphony Digital Inc., developing world famous racing game series “Gran Turismo”. His main interest is developing various real-time rendering techniques and exploring off-line ray tracing algorithms.